diff --git a/frontend-web/src/core/artifacts/hooks.ts b/frontend-web/src/core/artifacts/hooks.ts
index 45419ff3..0e9818ac 100644
--- a/frontend-web/src/core/artifacts/hooks.ts
+++ b/frontend-web/src/core/artifacts/hooks.ts
@@ -133,8 +133,18 @@ export function useUpdateArtifactContent() {
   return useMutation({
     mutationFn: updateArtifactContent,
     onSuccess: (content, variables) => {
-      queryClient.setQueryData(
-        ["artifact", variables.filepath, variables.threadId, variables.isMock],
+      // useArtifactContent 的查询键带第 5 个元素 publicShareCode，这里用前缀
+      // 过滤（setQueriesData）匹配，避免精确键缺少 publicShareCode 写到幽灵缓存、
+      // 导致保存后内容被旧缓存重置回原值。
+      queryClient.setQueriesData(
+        {
+          queryKey: [
+            "artifact",
+            variables.filepath,
+            variables.threadId,
+            variables.isMock,
+          ],
+        },
         {
           content,
           url: undefined,